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RFID lap counting and timing system for school walking club? Answered

My elementary school has a weekly walking and jogging club. It would be nice to have an "automated" system to tally the laps and times each week.
I do NOT want a commercial option, and hope to partner with the neighborhood Middle School tech elective to create the system.

In a perfect world, I'm hoping another user has created a system like this and could share their tips (even if for remote control cars) or an instructable. There might even be a way to use an entry system that records the times.


There are loads of RFID related instructables here on the right >>>

The rest is software.


the only hard part I can think of is coming up with a suitable high(er) gain antenna than most solutions so it can scan for a meter or two instead of a few cm.

Or there could just be a short tower that people scanned there chips at as they walk by, like some companies use for card locked doors and gates. Maybe a couple if there are a lot of people.